diacraft/datapack/data/diacraft/recipes/createaddition_small_light_connector.json

{
    "type": "minecraft:crafting_shapeless",
    "ingredients": [
        {
            "item": "createaddition:iron_wire"
        },
        {
            "item": "createaddition:connector"
        },
        {
            "item": "minecraft:coal"
        }
    ],
    "result": {
        "item": "createaddition:small_light_connector"
    }
}